Dump-car door mechanism.



PATENTED MAY 21, 1907.

D. H. POREMAN. DUMP GAR DOOR MECHANISM.

APPLIOATIOR IILBD JULY 16, 1908.

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JNI ENTO 12/7. Foreman.

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PATENTED MAY 21, 1907.

D. H. FOREMAN.

DUMP GAR DOOR MECHANISM.

APPLIGATIOH FILED JULY. 16,1905.

5 SHEETS-SHEET 2.

lNvzwyozz, OH Forema )7, MW

ATTORNEY.

PATENTBD MAY 21, 1907.

D. H. FOREMAN. DUMP GAR DOOR. MECHANISM.

APPLIOATION FILED JULY 16, 1906.

5 SHEETS-SHEET 3.

IVVENTOR. DH Foreman,

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No. 854,639. PATBNTED MAY 21. 1907. D. H. FOREMAN.

DUMP CAR DOOR MECHANISM.

APPLICATION FILED JULY 16, 1906.

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ATTOHAEY,

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No. 854,639. PATENTED MAY 21, 1907. D. H. FOREMAN.

DUMP GAR DOOR MECHANISM.

APPLIUATION FILED JULY 16, 1906.

5 SHEETS-SHEET 5.

2/6 [NVEN 7 0R, [2/-/. Foreman,

A TTORNEY UNITED STATES, PATENT OFFIOE.

DAVID E. FOREMAN, OF DENVER, COLORADO, ASSIGNOR TO THE HERR DUMP CAR COMPANY, OF DENVER, COLORADO.

ouiviP-oAn-"bqoR MECHANISM.

Specification of Letters 'Patent.

Application filed July 16,1906. Serial No. 326,340.

No. 854,639. Fatented May 21, 1907.

To (LU whom it, natty concern:

or looking the entire Operative "con truotion.

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: Her discharge position. I also indicate by Another improved feature in my present 55 1 Be it known that I, DAVID H. FOREMAN, a construction is a gravity locking bar mountcitizen of the United States, residing at the ed adjacent to one each of the rows of the city and county of Denver and State of (1010- separable hinge-lock devices, the function of 5 ratio, have invented. certain new and useful which attachment is to automatically inter- Improvements in Dump-Car Door Mechanlock the operative construction ina way pre- 60 ism; and I do declare the following to be a venting confusion in movements, by the opfull, clear, and exact description of the invenerator, as shall be hereinafter more fully tion, such as will enable others skilled in the ,shown.

art to which it appertains tomake and use .-I further improve upon the mechanism dethe same, reference being had to the accomsigned for raising or winding thedoors, and 6 5 panying drawings,and to the letters and figmore particularly improve upon a construcures of reference marked thereon, which form tion designed for this purpose as shown and a part of this specification. claimed in application Serial No. 319,722,

I5 My invention relates to mechanism defiled by James R. Groves, June 1, 1906..

signed to lock, release and operate the dis- In the accompanying drawings I show my 7 charge doors of dumping cars, andis. more improved operative construction as being particularly adaptedto a GOJlStI'IlCtiOlIzOf-diS- fitted to that class of dumping car body havcharge doors, fitted with releasable hingeing a central longitudinal truss beam A, side looking devices, upon both longitudinal channel beams B, B, bolsters O, C, sloping edges of the same, whereby the doors may be end floors D, D, with two centrally disposed 75 released from either edge, the hinge locking discharge, openingsE, E, located adjacent to devices in engagement upon the Opposite the sides of the central longitudinal truss edge acting as a hinge around which the re- .bea-in A, which are closed by longitudinal z 5. leased doors'swing, permitting the discharge separably hinged discharge doors, F and G.

.ofthe cargo across the sloping doors in either Reference is to be had to the accompany- 8o ,direction as conditions may require, this con ing drawings forming a part of this applicastruction of universally releasable discharge .tion, in which,

1 door being substantially that shown, de Figiire 1 shows the operative construction 3 4. 3( SCIlbe(l and claimed in application, SerialNo. mounted upon oneend of the car, in full fig- 315,265, filed by Herbert, T. 'Herr, May-4th, ure, side elevation, while the sloping floors 85 1906, and inappli'o'ation, Serial No.' :7293,490 D, D, and central body portion of the car and filed: by .Herbert Herr, James R, Groves operative construction is shown in section on an jpavid H. Foreman, Dec. 27th, 1905. line w-w of Figs. 2 and 3. In :this figure the 3 5 I'iiny present application, I illustrate and: discharge door F is shown in closed position,

describe a gear operating mechanism suitwith a portion of the same shown in broken 9Q ably connected with the; several sets of longilines in the open position. Fig. 2 1s a plan tudinally :disposed releasable hinge devices. view of a part of the car body and the opera- This construction is located upon one end of, tive construction, the sloping end floors D, D,

40 the dumping car. and is designed to be operbeing cut away approximately upon section ,atQd by a s ngle hand crank, thus enabling line 'y'y of Fig. 1, to moreclearly show the 9 5 on operator?to;- manipulate and -fcontrol,. operative construction. In this figure the wit out changing'position, any Offth e' several discharge ,door F is shown in closed position,

releasing or' looking mdvements. This is and the discharge door G in partly open,

5 deemed a1.deoided-;-i1nprovement upon the outer discharge position. Fig. 3 is a cross spring latch "lever ,inechanisin shown and section, the righthalf andupperportionof the mo claimed in appllcatio i' Serial No. 293,490, left half of which istaken on line ww of hereinbefo're referred to inasmuch as this Figs. 1 and 2 and the portion of the left half operative constructioniis simpler, stronger below the broken line is taken on line o v of and more compact, permitting it to be comthe same figures. In this figure the left hand.

pletely incased, whereby it is fully protected door F isshown inthe extreme open position, IO 5 against elements incident to 'practice,.or inawitli the inner row of hinge locks released, licious tampering; 'a. single lockboltisealing and the right hand door G, in partly open,

broken lines in thisfigure the several inward or outward discharge positions into which the doors may be dropped by releasing the corresponding inner or outer separable hingelocks. Fig. 4 is'an enlarged scale detail of the gear operating and locking mechanism, the right half being shown in cross section on the central vertical plane of the construction, and the left half being front end elevation, showing the exterior of cover casing. Fig. .5 is an exterior plan view, corresponding with Fig. 4, the right half showing the top cover removed, and the Winding shaft cut on a horizontal section on line U Fig. 4. Fig. 6 is a longitudinal section of the construction shown in Figs. 4 and 5, being taken on the several vertical planes indicated by section line zz Fig.4. Figs 7, 8-, 9 and 10 are detached detail views, illustrating different positions of the locking bar and gear quadrants. Figs. 11 and 12 are respectively front and side elevations of a hinge-locking cam, and attached gravity locking bar, which is. shown in disengaged position. Figs. 13 and 14 are similar figures showing the hinge-locking cam in released position and the gravity locking bar in engaged position. Figs. 15, 16 and 17 are respectively plan, elevation and cross-section, on enlarged scale of a slotted, hand crank interlocking and supporting bar. Fig. 18 is an enlarged scale alternative constructionof the door-Winding cable fittings, differing from that shown in general view Fig. 1. Figs. 19, 20 and 21 are detached details of the connecting bar slotted head, with attachments.

Similar reference characters indicate corresponding parts in the several views.

The details of construction shown in this application which were also shown and described in part in applications, Serial Numbers 293,490, 315,265, and 319,722, hereinbefore referred to, may be briefly described as follows: The discharge openings E, E are fit ted with suitable discharge doors F and G, which are hinged to the car body longitudinally upon both their inner and outer edges, by a suitable number of hinge-locking cams 2, 2, 2. Those upon the outer edges being secured to the side channels B, B, and those upon the inner edges being secured to the sides of the central truss beam A, as is clearly shown in Figs. 2 and 3. On to the under sides of the discharge doors F and G are secured a corresponding number 'of transversely disposed door beam hinges 3, 3, 3, the ends of which projecting slightly beyond the edges of the doors, are formed into transverse joint bars 3, designed to register with and be engaged when in the closed position of the door, by the corresponding jaw 2 of the pivoted releasable locking cam 2 as shown in'Figs. 11 and 12. A circular crank-pin 2 formed integrally upon the locking cam 2 is jointed to an upright toggle link 2 the ups54,ese

per end of which is jointed to a connecting bar 4, which is supported at each of thehingelocking cams 2, in a slotted guide 2 cast integrally upon the top of the cam supporting hanger. This guide also forms a stop to the travel of the toggle link 2 and connecting bar 4.

From the above description, and by reference to Figs. 1 and 11 to 14 inclusive, it will be understood that if the connectingbar 4 be moved by suitable means to the extreme right, as in Figs. 1, 11 and 12, the hingelocking cam is rotated into the closed position, positively locking the discharge door, which had been raised by suitable means, hereinafter described. If the bar 4 be moved to theextreme left as in Figs. 13 and 14 the adjoining hinge bar ends will be released, permitting the door to drop, while the opposite hinge-bar ends turn jointedly in the engaged hinge-locking cams. In the patent applications Serial Numbers 293,490 and 315,265 above referred to, four upright hand levers, were mounted upon the operative end of the car, and attached respectively to the two inner and two outer hinge-locking cam connecting bars'4. As an im rovement upon this four-lever construction have designed the transverse rock shaft and gear quadrant construction shown in enlarged scale detail in Figs. 4, 5 and 6. Suitably mounted upon the operative end of the car is a transverse rock-shaftfi, of a length equal to the width of the car body, (see Fig. 2). Secured upon the extreme outer ends of this shaft are crank arms 6*, formed with outwardly disposed crank-pins or studs 6*. This rock shaft is connected with the two outer, or side hinge-locking cam connecting bars 4, 4, by intermediate slot-head bars 5, 5. A bevel gear quadrant 7 is securely keyed upon the rock shaft 6, approximately midway from the ends, and at the center of the car end, immediately adjoining which to the ri ht, is a similar bevel gear quadrant 8, which is mounted loosely upon the rock shaft 6, merely taking axial bearing thereon. Formed integrally upon this gear quadrant 8 is a crank arm 9 jointed to which is a T-end bar 10, connecting this quadrant with the inner hinge-lockln cam connecting bars 4, 4. Cast integral ly upon the backs of these gear quadrants 7 and 8 are annular locking flanges 7 and 8, designed to engage, and cooperate with a vertical locking bar 18. These quadrants are mounted upon the rock shaft 6 with'their gear teeth faces 7 and 8 placed outwardly. A necessary clearance between the locking flanges '7 and 8 is maintained by the extended hubs 7 and 8.

Suitably secured to the frame, of the car, forming a central bearing for the rock shaft 6 is a base plate 11, on to which is bolted, immediately adjoining the outer ends of the gear hubs and over the rock shaft 6, two

' below the slotted bar.

quadrant covers 12, 12, which are joined and held together on a central vertical plane by bolts 12*, 12. Cast integrally upon the top of these two covers on a central vertical plane are two bearings 12, 12 and on a line with them, adjoining the inner sides are two bearin s 12", 12, mounted in which are two vertica shafts 13 and 14, on to the lower end of each of which is keyed respectively a bevel pinion 13 and 14 which mesh with the adjoining gear quadrants 7 and 8. these shafts extending above the cover bear ings are formed squared studs 13 and- 14*, designed to be engaged by the socket head 15 of a socket crank'15.- Referring to Figs. 15, 16 and 17 it will be seen that this socket crank is supported in a slotted supporting bar 21, into the slot 21 of which the crank shaft is interlocked by a collar 15 welded'on the shaft above the slotted bar, and by the socket head 15 riveted on the crank shaft The slot 21 is long enough to permit the shifting of the socket crank to either shaft stud, as is shown in broken lines in'Fig. 16. Bearing ln s 21 are formed upon the upper'side of the s otted bar 21, adjacent to the ends of the slot, conforming to the periphery of the collar 15 which takes bearing against them when the socket crank is attached to either shaft stud, as shown in Figs. 15 and 16. In the drawings the slotted bar 21 is shown as being supported. on the car bolster by angle iron posts 21.

Longitudinal shaft supporting flanges 12 12 are cast upon the top of the quadrant covers 12, 12, on to which is bolted a cap boxing 16, mounted within which upon a central longitudinal line is a compound crankshaft 17 the centrally disposed crank 17, of which engages the vertical locking bar 18 within a slotted opening 18 formed in the upper end of the bar. This locking bar is mounted in suitable guides 12 and 16 formed in the covers 12 and cap boxing 16, within which it moves freely up or down. The lower end of this locking bar extends downward, occupying the space between the annular locking flanges and backs of the gear quadrants 7 and 8. Clearance notches 18 and 18 are formed in the'sides of this bar designed to conform to the annular looking flanges 7 and 8, and in certain positions of the locking bar disengage the otherwise locked gear quadrants, as shall be shown. An opening 16 is formed in the top of the cap boxing 16, designed to receive a looking or sealing bolt 16. A short hand lever 17 is keyed on the forward end of the crank shaft 17, and on to the opposite rear end is formed a crank 17, jointed to which is a vertically disposed curved connecting bar or link 19, the lower end of which is connected by a short crank arm-20 with a pawl releasing rock shaft 20.

Upon the ends of outer hinge-locking cams 2, 2, are angular interlocking brackets 22, 22, designed to form a positive lock to the slotted head bar against longitudinal movement when raised and disengaged from the. rock shaft stud 6 and also to form aguide preventing vertical movement and disengagement of the slotted head when being moved longitudinally by the rotating rock shaft6 and moving crank arm 6*, which function of this-construction was shown and described in application Serial No'. 293,490, the slotted heads, however, being connected in that construction to the upright hand levers, instead of the rock shaft cranks as here shown, and utilized upon a four door dumping car, while in the present two-door car, the construction is fully adapted to facilitate the cutting out of the hinge-locking cams on either outside of the car, allowing them to remain in engaged po sition while the opposite outer cams only are released through rotation of crank stud 13 gear quadrant 7 and rock shaft 6, thus discharging the entire cargo to either outside of the car, as desired. To further facilitate this cutting out feature, when a single operator is handling the operative construction, a lifting bar 23, is jointedly secured to the side channels B, B, beneath the slotted heads 5, 5. By upturning the bar 23, the slotted head israised and propped up in the disen gaged position, and shown in Figs. 20 and 21, permitting the crank stud 6 to move idly in the slotted head of bar 5, as shown in Fig. 19.

Adjoining the slotted guide 2 of the hinge-locking cam hanger (see Figs. 11 to 14) is a vertically disposed slot 2 formed by the flange 2 on a vertical plane with which slot is a bearing 2*, formed in a bracket lug 2 cast integrally near the bottom of the cam hanger; .mounted within this slot and guide is a locking bar 24, the upper angular end 24 of which is formed into a squared locking lug, designed to drop by gravity and engage a notch 4 formed in the top edge of the cam connecting bars 4, 4, 4, 4, when'the bars are pushed to the extreme left, as in Figs. 13 and 14, with the hinge locking cams in released position. The extreme lower end of this bar 24 is formed into an oppositely disposed flattened angular arm 24 which extends back and under the side channels B, as shown in Figs. 12 and 14, a sufficient distance to come within the plane of travel of the extended end 3 of the door beam hinge joint-bar 3, by which it is engaged from beneath by the closing door, which lifts the bar and lug 24 out of engagement with the connecting bar notch 4 This locking bar 24, is attached to one each of the outer and inner rows of .hinge locking cams, pref- Lil erably those nearest the operative end of the car as shown in plan vlew Fig.2. Thus it will be seen that when the connecting bars have been pushed to the extreme left, releasing one side of the door, that the cams are automatically locked in the open released position, until the door is raised to the closed position, releasing-the locking bar, for a purpose as shall be hereinafter shown. Io

The above described construction comprises the mechanism by means of which I lock or release the separable hinge-locking cams, as well asthe means whereby the entire mechanism can be locked or scaled up by a single locking bolt.

- The construction whereby the discharge doors are retained in any partly open position or permitted to assume either the inward or outward entirely open position, as shown in Fig. 3, and from which positions they can be returned to the raised or closed positions, as shown in Figs. 1 and 2, is an improvement upon the same class of construction shown and claimed in application Serial No. 319,722, filed by James R. Groves, June 1, 1906. Duplicate winding constructions cooperating respectively with each discharge door F and G are suitably mounted upon the car body, in a vertical plane substantially on a line of the longitudinal center of each door,

a description of one of which will cover both. They comprise in each a cable, chain, band or other suitable flexible construction 25, on to the forward end of which is secured a'short section of winding chain 26, the end of which is bolted to the lower end of a vertical winding shaft 27, which is suitably mounted in upper and lower bolster brackets or bearings 28, 28. A hand wheel 29 is mounted on the upper end of each winding shaft. An enlarged hub is keyed upon the vertical winding shaft, immediately above the upper bolster bracket, the upper end of which carries a band-brake wheel 30, and the lower end of which immediately beneath the brake wheel is formed into an inverted crown ratchet 31, cooperating with which and mounted upon the side of the upper bolster bracket 28, is a weighted pawl 32 which normally rests in engagement with the ratchet 31. y A stud pin 32 projects from the weighted lever end of the pawl, which is engaged upon the under side by an elongated crank pin 20', formed upon the end of the pawl-releasing rock shaft 20. A friction strap 30 is anchored to a stud pin 30 mounted upon the upper bracket 28 and carried around the brake wheel 30, where it is connected with the short crank arm 33 of a transverse rock shaft 33, suitably mounted adjoining the crank end in an arm 28* of the u per bolster bracket, and upon the inner end in-the side of the base plate 1 1. Curved foot tread arms 33 are keyed upon the inner ends of the rock shafts 33, adjoining the sides of the are mounted upon the car frame adjacent the .forward end of the longitudinal discharge doors, and similar transverse supporting beams 35, 35 are mounted adjacent the rear end of the doors. A swiveled sheave 36., is mounted on the forward beam 34, in a jointed yoke 36 A swiveled ring 37, is mounted jointedly on the rear beam 35. On to the under side of each discharge door,adjoining the front and rear ends, on the longitudinal center, are bolted sheave supporting brackets or spiders 38, 38 within which are mounted swiveling sheave wheels 39, 39 which are jointedly attached to the brackets 38, 38 by yokes 38 38 The cable 25, is carried from the winding shaft 27 back to and over the supporting sheave 36, then downwardly and under the front door sheave 39, through the supporting bracket 38, back to and under the rear sheave 39, then up to the rear supporting ring 37. In the construction of this flexible winding attachment, I have improved upon a similar attachment described and claimed in application Serial N 0. 319,722, hereinbefore referred to, in mounting the door sheaves jointedly within their supports, giving them a range of approximately ninety degrees of transverse radial adjustment, designed to better meet the re quirements of practice consequentupon the released discharge doors being swung from either hinged edge, to the maximum open position, as shown by door F, Fig. 3. I further improve upon the construction above referred to, by mounting upon the flexible winding member an elastic, or yielding section designed to receive the severe impact of the loaded discharge door dropping upon the cable, and thereby increase both the working and enduring capacity of the construction. In general view Fig. 1, the loop-socket 25 of the winding cable 25 is extended sufficiently to form a yoke 25 within which is mounted a short section of compression spring 25 and spring stem rod 25, the eye end of which is secured to the swiveled ring 37 of the rear support 35. An alternative construction is shown in the enlarged detail Fig. 18, in which compressed air is utilized in addition to the compression spring. An open end cylinder 40, is attached to the swivel ring 37 mounted within which is a piston 41, with piston stem 42,upon which, and between the closed end of the cylinder and piston head is a return spring 43, the lower eye-end of the piston stem 42, being attached to the loop-socket 25 of the winding cable 25. In this construction the cylinder and piston act somewhat as a dash-pot, the compressed air being allowed to bleed by theunpacked piston winding shaft ratchets 31.

v. wmsc ehat the spring 43 must be of sufiicient strength to return the piston to thev position shown in Fig. 18, and maintain the same against a taut cable and the weight of the empty door. The sealing bolt 16 being inserted in the hole 16 of cap covering 16, as shown in Figs. 1, 4 and 5, passes immediately above'the end of the locking bar 18, as shown in Fig. 4, preventing its upward movement, also engaging the crank 17 within the bar slot 18 and preventing any rotation of the shaft 17, by the short hand lever 17". and locking flanges 7 and 8 are both in the position shown in Figs. 4 and 10 with the square fiangeends 7 d and 8 locked against rotation behind the bar 18. In-this position all the operative construction is locked against movement. Withdrawing the sealing bolt 16 the hand lever 17 b can be carried to the position shown in Figs. 7 and 9, the crank 17 carries thelock bar 18 up to the position shown, wherein the clearance notches 18 and 18 register with the ends 7 d and 8, of the annular locking flanges.

Meantime the crank 17 connected with the curved link 19, has lifted the crank arm 20*, of the pawl releasing rock shaft 20, and the end cranks 20 engaging the pawl stud 32 from beneath, carrying the same up to the position shown in broken lines inFig. 4, releasing both pawls 32, from their respective This initial movement frees the winding mechanism, by disengaging the pawls from the-ratchets, before any movement can be made toward releasing any of the door hinge-locking cams. The mechanism is now in position'for releasing either the inner or outer cams, as it will be seen by reference to Fig. 7 that both gear quadrant flanges stand in the released position with reference to the clearance notches of the lock bar 18. To release the outer cams of both doors and discharge the load outwardly from both sides of the car, the operator moves the socket crank 15, from the stud 14", Fig. 3, through the bar slot 21 to the stud 13*. It will be noted that this socket crank cannot be entirely removed from the slotted bar, thereby preventing its becoming mislaid or lost, but it can be very readily moved from one crank stud to the other.

Turning the crank from the rear position shown in Fig. 1 around to the front as indicated by a broken circular arrow line in Fig. 2, rotates the crank shaft 6, and through the crank arm 6 and stud 6 moves the slotted head bar, and connecting bar 4, to the extreme left, as shown in Figs. 13 and 14, and indicated by broken lines in Fig. 1, releasing the outer side lines of door hinge cams on both sides of the car, permitting both doors to drop from the outer edges, and discharge the load to the sides. Had the operator desired The gear quadrants to release but the one door only, as for example theright hand door G as shown in Fig. 2, he would have first raised the lifting bar 23, as shown in' Figs. 20 and 21,-under the slotted head bar 5 connecting to door F, when the crank stud 6 would move idly in the slotted head as shown in Fig. 19, while the other crank stud 6", being in engagement with the recess of the slotted head bar connecting to door G, as shown in Fig. 6 moves this bar to the extreme left releasing the cams as shown in Fig. 2. The slotted bar of door F meantime has been securely locked against accidental release by the engagement of the shoulder on same with the bracket 22 as shown .in Figs. 2 and 19.

Kit is desired to release the inner rows of locking cams, and discharge the cargo inwardly 'as shown in Fig. 3, the operator turns the socket crank 15 attached to the crank stud 14 as shown in Figs. 1 and 3 around to the position shown in Fig. 3, rotating the pinion 14 (Fig. 4) and loose gear quadrant 8, with crank arm 9, carrying the T-end rod 10 to the extreme left, as shown in Fig. 6 releasing the inner hinge-locking cams as shown in Figs. 3, 13 and 14. I do not show the slotted head bar connection with these inner A-frame hinge locking cams, permitting the cutting out of either row of cams.

This can be readily substituted for the solid bar connection shown if desired by fitting the crank arm 9 upon both sides with stud pins and carrying separate slot head bars 5, 5, to each connecting bar 4, 4.

I provide means whereby the cam releasing movements are interlocked, one against the other, in such manner as to prevent the releasing of any one row of hinge cams upon a door while the opposite cams of the same door are released, in order to prevent the operator dropping a door from the car entirely, through confusion or careless manipulation. In releasing the inner hinge cams as shown in Figs. 3, 4, 6, 7 and 8, with the lever 17 thrown to position shown in Fig. 7, raising the lock bar 18, and rotating the gear quadrant 8, carries the locking flange 8 through the clearance notch 18, of the lock bar, when the inclined section 8'' of the quadrant looking flange carries the lock bar up to the posi tion shown in Figs. 6 and 8, the vertically elongated slot 18 in top of the bar permitting this continued upward movement of the bar, with reference to the engaged crank 17*. In this position (Fig. 8) it will be seen that the lower portion of the bar 18 below the clearance notch 18 is carried up in front of the locking flange 7 of the gear quadrant 7, and is retained in this position throughout the rotation of the annular flange 8., as shown in Figs. 6 and 8, thus effectually locking the gear quadrant 7 against any revoluble (or cam releasing) movement, while the quadrant 8 is in any degree of the revoluble release position. Simultaneous with completed movement of the locking cam bars 4, 4, by the rotation of the gear uadrant 8', disengaging the inner-rows of inge cams and-releasing the door hinge bars 3, the bars 4, 4, are automatically locked against return movement by the gravity lock bar lug 24 dropping into the notch 4 as shown in Figs. 13 and 14:. The hinge cam mechanism and gear quadrants are now locked against all movements until the released doors be first wound up to the completely closed position, on the closing movement of which the extended hinge bar 3 engages the arm 24 and lifts the lock bar lug 24 clear of the notch 4 releasing the locking cam bars 4, 4. With the socket crank 15, gear quadrant 8, and hingelocking cam 2 in the open position as shown in Figs. 6, 13 and 14, and the ratchet pawls 32 disengaged, before winding the doors the operator throws the lever 17 from the osition shown in Fig. 7 to that shown in Fig. 4, dropping the pawls 32 into engagement with the winding shaft ratchets 31 preparatory to winding the doors, meanwhile the lock bar 18, is being retained in the extreme upper position, by engaged, open, quadrant flange 8, as in Figs. 6 and 8, the vertical elongated opening 18 of the lock bar 18 being of sufficient extent to permit the free downward travel of the crank 17, when throwing the lever 17 to drop the pawls into engagement, notwithstanding the extreme upper position of the locking bar 18, the open doors having been wound up into the closed position, disengaging the lock lugs 24*,the hinge cams 2 can be closed up under the hinge bars 3',

by turning the socket crank and gear quad rant 8 back to the closed position shown in Figs. 4: and 10, the annular flange 8 having passed out of the clearance notch 18 the lock ar 18 drops by gravity, locking both quadrants as in Fig. 4. Summarized, the operationof discharging a cargo is: remove the sealing bolt, throw lever 17* over to right,

(which disengage pawls 32, and clears lock bar 18), turn socket crank 15, three fourths around, (releasing hinge cams) and the load discharges. It is impossible for the operator to release the loaded door-hinges, before first disengaging the pawls from the winding shaft ratchets, otherwise damage would result to this winding mechanism. Again; should he through confusion remove the crank socket from the stud coo erating with sets of hinge cams already released tothe other stud cooperating with those in hinge joint engagement, he is locked against movement, nor can he close the open hinge cams Without first winding the open door, as has been shown. This series of positive interlocking functions insures the pro er manipulation of the construction at al times, and I desire to call especial attention to the fact that all these functions are accomplished the by powerful, compact and positive mechan- I .dischargedoors in a partly open position, in

order to divert the load accordingly, as the door G, shown in Fig. 2, in partly open outer discharge position, or the same door in Fig. 3, partly open inner discharge position. To control'the opening of the doors, I mount upon the winding shafts 27, 27, the band brake wheels,

30, 30, with the brake straps 30= attached toa rock shaft crank 33, connected through the rock shafts 33,33 with a cenrally located tread bar 33, which by its location enables the operator to apply the brake, when he is in position to manipulate the .door releasing mechanism.

Having thus described myinvention, what I claim is:

1. In a dump car, the combination of a dumping door, separable hinge members for supporting the door at its opening edge, and means for operating one set of hinge members for releasing and lockin g the opening edge of the door, said means including a rotary shaft and cooperating gears.

2. In a dumping car, the combination of a dumping door, separable hinge members for supporting the door at its opening edge, means for operating one set of hinge members including a rotary shaft, a gear fast thereon, a second. gear meshing with the shaft gear, and a bar slidably mountedand connected in cperative relation with the second gear.

3. In a dumping car, the combination of a dumping door, separable hinge members for supporting the door at its opposite edges whereby either edge may be released for opening purposes, a pair of independently 0 rating rotary shafts, and connections inc uding gears located between the respective shafts and the movable hinge members of the respective edges of the dumping door, whereby either door edge may be released at will for dumping purposes.

4. In a dumping car, the combination of a dumping door, separable hinge members for supporting the door at its opposite edges wherebyeither edge may be released for opening purposes, a pair of independently operat ing rotary shafts, connections including gears located between the respective shafts and the movable hinge members of the respective edges of the dumping door, whereby either door edge may be released at will for dump- ICC LII

ing purposes, and means for automatically whereby the closing movement of the door locking one gear against movement when the lifts the locking'bar and disengages the conother is actuated to release one of the door edges, until the actuated gear is returned to its normal position.

5. In a dumping car, the combination of a dumping door, separable hinge members for supporting the door at its opposite edges whereby either edge may be released for opening purposes, a pair of independently operating rotary shafts, connections including gears located between the respective shafts and the movable hinge members of the respective edges of the dumping door whereby either edge may be released at will for dumping purposes, means for autoinaticallylocking one gear against movement when the other gear is actuated to release one of the door edges, until the actuated gear is returned to its normal position, and means for automatically locking the hinge-member-actuating devices against the reverse movement, when shifted to the releasing position, until the released edge of the door has been raised to the closed position.

6. In a dump car, the combination of a dumping door having separable hinge members at its opposite edges, a distinct set of devices for actuating the movable hinge members of each door edge forlocking and releasing purposes, and means for automatically locking one set of actuating devices when thrown to the door releasing position, until the door has been returned to the closed position, the automatic locking means being released by the closing movement of the door.

7. In a dump car, the combination of a dumping door having separable hinge members at its opposite opening edges, a distinct set of devices for actuating the movable hinge members of each door edge, each set of devices including a connecting bar and a locking bar which automatically engages the connecting bar of each set of actuating devices and locks the same against movement until the opening edge of the door is returned to the closed position, the locking bar having a part lying in the path of the door during its closing movement, whereby the locking bar is actuated to release the connecting bar.

8. In a dump car,'the combination of a dumping door having separable hinge members at its opposite opening edges, a distinct set of devices for actuating the movable hinge members of each door edge, each set of devices including a horizontally disposed connecting bar having a notch in its upper edge, and a vertically disposed gravity locking bar having a part engaging the upper edge of the connecting bar and adapted to drop into the notch of the latter when shifted to release the opening door edge, the said locking bar having a part projecting into the path of the door as it is raised to the closed position,

necting bar.

9. In a dump car, the combination of a dumping door provided with separable hinge members for supporting two of its opposite edges, whereby either edge may be released for dumping purposes, a' distinct set of devices for actuating the movable members of i the hinges at each door edge, each set of devices including a rotary shaft, a pinion thereon, and a gear cooperating with the pinion; and means actuated by either gear when operated to release one edge of the door, for locking the other gear against movement until the actuated gear is'restored to its normal or original position.

10. In a dump car, the combination of a dumping door provided with separable hinge members for supporting two of its opposite edges, whereby either edge may be released for dumping purposes, a distinct set of devices for actuating the movable members of the hinges at each door edge, each set of devices including a rotary shaft, a pinion thereon and a gear cooperating with the pinion: and a vertically movable locking bar located between the two gears and having notches in its opposite edges adapted to receive cam ribs or flanges with which the respective gears are provided, the connection and arrangement of the parts being such that when either gear is actuated to release one of the door edges, the locking bar is actuated by the engagement of the cam rib of the actuated gear with its notch, to bring its opposite notch out of alinement or register with the cam rib of the other gear.

11. In a dump car, the combination of a dumping door having separable hinge members at its opposite opening edges, a distinct set of devices for actuating the movable hinge members of each door edge, each set including an independently operating gear, whereby the respective door edges are released by the movement of the respective gears, means for locking the actuated gear against the reverse movement until the dumping door has been raised to the closed position, and means for locking the opposite or inactive gear against movement until the actuated gear has been returned to its normal position. I

12. In a dump car, the combination of a dumping door having separable hinge members at its opposite opening edges, a distinct set of devices for actuating the movable hinge members of each door edge, each set of devices including an independently operated gear, a vertically movable locking bar located between the two gears and notched to receive cam ribs or flanges with which the said gears are respectively provided, whereby as either gear is turned, the locking bar is actu- 5 of the crank shaft. 4 70 opening edges, a distinct set of devices for op- 17 In a dump car provided with a dumpcrating the movable hinge members at each I ing door, the combinationof separable hinge edge of the door, each set of devices includmembers at two opposite edges of the door, a ing an operating gear, a vertically movable distinct set of devices for operating the mov locking bar located between the two gears able hinge members at each edge of the door, 7 and provided with notches adapted to 'reeach set of devices including a gear, a locking ceive ribs formed on the respective gears bar-located between the two gears and having when the bar is properly adjusted, the nornotches in its opposite edges to receive cam mal position of the bar being with its notches ribs formed on the gears, an operating crank out of alinement with the ribs whereby the shaft passing through anelongated opening 80 gears are locked against movement. formed in the bar, a winding shaft, door clos- 14. In a dump car, the combination of a 1 ing means connected with said shaft, a door having separable hinge members at its ratchet on the winding shaft, a locking pawl opening edges, a distinct set of devices for engaging the ratchet, an operative connecoperating the movable hinge members at tion between the pawl and the crank shaft, 85 each edge of the door, each set of devices int e arrangement being such that when the eluding an operating gear, a vertically n1ov crank shaft is actuated to release the pawl, able locking bar located between the two the locking bar is brought into position gears and provided with notches adapted to whereby its notches are in alinement with the 2 5 receive ribs formed on the respective gears ribs of the gears. 0 when the bar is properly adjusted, the nor- 18. In a dump car having two dumping mal position of the bar being with its notches doors, the combination of two winding shafts out of alinement with the ribs whereby the connected in operative relation with the regears are locked against movement, and spective doors, a ratchet on each shaft, a

'5 means for actuating the bar to bring its pawl engaging the ratchet andnormally lock- 5 notches into operative alinement with the ing the shaft in a position corresponding with ribs of the gear. the closed position of the doors, a rock shaft 15. In a dump car, the combination of a arranged to actuate the pawls at both winddoor having separable hinge members at its ing shafts, and a crank shaft connected in opening edges, a distinct set of devices for operative relation with the rock shaft. roo operating the movable hinge members at 19. In a dump car having two dumping each edge of the door, each set of devices indoors, the combination of a distinct set of eluding an operating gear, a vertically movseparable hinge members for holding the able locking bar located between the two opening edge of each door in the closed posi- 4 gears and provided with notches adapted to tion, and means for simultaneously actuating I 5 receive ribs formed on the respective gears the movable hinge members of both doors for when the bar is properly adjusted, the norreleasing or locking purposes, said means, in- Inal position of the bar being with its notches eluding a rotary shaft and two cooperating 4 out of alinement with the ribs whereby the gears.

gears are locked against movement, and 20. In a dump car having two dumping no means for actuating the bar to bring its members, the combination ofseparable notches into operative alinement with the hinge members connecting both edges of ribs of the gear, said means comprising a eachdoor with the car, whereby either edge crank shaft passing through an opening of either door may be released for dumping 5 formed in the locking bar. purposes, and means for actuating the mov- II 5 16. In a dump car, the combination of a able hinge members of both edges of each door having separable hinge members at its door, comprising two distinct sets of deopening edges, a distinct set of devices for opvices, one set being connected in operative crating the movable hinge members at each relation with the hinges at one edge of both edge of the door, each set of devices includ- I doors, and the other set with the hinges of the 2 ing an operating gear, a vertically movable other edge of both doors, each set of operatlocking bar located between the two gears ing devices including a gear, and means for and provided with notches adapted to rcautomatically locking each set of devices ceive ribs formed on the respective gears against movement, when the other set of dewhen the bar is properly adjusted, the norvices is actuated for door-releasing purposes, 12 5 Inal position of the bar being. with its notches until the actuated set of devices is restored to out of alinement with the ribs whereby the its normal position. gears are locked against movement, and 21. In a dump car having two dumping means for actuating the bar to bring its members, the combination of separable hinge 5 notch iIltO Operative alinem nt Wi h he members connecting both edges of each door I30 ated, and a removable sealing device so 10- the movement of the bar incident to the operation of either gear.

n a dump car, the combination of a door having separable hinge members at its cated as to prevent opening ribs of the gear, s crank shaft passin aid means comprising a g through an formed in the locking bar, whereby the latter is allow elongated ed to move independently combination of separable hinge mem with the car, whereby either edge of either door may be released for dumping purposes, and means for actuating the movable hinge members of both edges of each door, comprising two distinct sets of devices, one set being connected in operative relation with the hinges at one edge of both doors, and the other set with the hinges of the other edge of both doors, each set of operating devices including a gear, means for automatically locking each set of devices against movement, when the other set of devices is actuated for door releasing purposes, until the actuated set of devices is restored to its normal position, and means for preventing the return of the actuated set of devices to its normal position until the open doors have been returned to the closed position.

22. In a dump car having two doors, each adapted to open at two opposite edges, the

connecting both edges of each door of the car, a pair of gears for operating the movable hinge members of both edges of both doors, each gear being connected to actuate the movable hinge members at one edge of both doors, the said gears being located in suitable proximity, a rotary shaft for each gear, each shaft having a pinion meshing with one of the gears, a removable crank for operating each shaft, a slotted plate or bar through which the crank passes, the length of the slot being such that the crank may be disengaged from either shaft and placed upon the other shaft without removing it from the slotted plate. 23; In a dump car having a hinged door, the combination of a flexible device suitably anchored at one extremity and passing under the door for closing purposes, awinding shaft connected with the opposite extremity of the flexible device, a brake wheel on said shaft, a hand brake engaging said wheel, a rock shaft connected with the band brake, arms connected with the rock shaft, and a foot tread bar connected with the arms for controlling the brake band. I

24. In a dump car having a pair of hinged dumping doors, the combination of flexible devices passing under the doors for closing purposes, the said devices being suitably anchored at one extremity, windin shafts connected with the respective flexib e devices at their opposite extremities, brake wheels aplied to the respective winding shafts, a hand brake engagin each brake wheel, one extremity of each Imnd brake being connected with a stationary support, a rock shaft with which the opposite extremities of the brake bands are connected, arms rig idly connected with the rock shafts, and a foot tread bar attached to the arms.

25. In a dump car having a hinged door, the combination of a flexible device suitably anchored at one extremity and passing uners for der the door for closing purposes, means connected with the opposite extremity of the flexible device for actuating the same to close the door, the said flexible device having an elastic member adapted to allow the flexibie device to yield longitudinally when sub,- jected to excessive strain. a

26. In a dump car having dumping doors,

. the combination of separable hinge members connecting one edge of each door with the car, means for actuating the movable hinge members for locking and releasing purposes, including connecting bars provided with slotted heads, a crank shaft having cranks engaging said heads, means for operating the crank shaft to actuate the connecting bars, and means for raising and supporting the slotted heads whereby the studs of the cranks move idly during the operating movement of the shaft.

27. In a dump'car having two doors, each adapted to open at two opposite edges, the combination of separable hinge members for connecting both edges of each door of the car, a pair of gears for operatingthe movable hinge members of both edges of both doors, each gear being connected to actuate the movable hinge members at one edge of both doors, the said gears being located in suitable proximity, a rotary shaft for each gear, each shaft having a pinion meshing with one of the gears, a removable crank for operating each shaft, a slotted plate or bar through which the crank passes, the length of the slot being such that the crank may be disengaged from either shaft and placed upon the other shaft without removing it from the slotted plate, the crank being fashioned both above and below the slotted plate or bar to prevent its removal from the said bar when the parts are assembled.

28. In a dump car having two doors, each adapted to open at two opposite edges, the combination of separable hinge members for connecting both edges of each door of the car, a pair of gears for operating the movable hinge members of both edges of both doors, each gear being connected to actuate the movable hinge members at one edge of both doors, the said gears being located in suitable proximity, a rotary shaft for each gear, each shaft having a pinion meshing with one of the gears, a removable crank for operating each shaft, a slotted plate or bar through which the crank passes, the length of the slot being such that the crank may be disengaged from either shaft and placed upon the other shaft without removing it from the slotted plate, the crank bein provided with separated stops above and below the slotted bar and arranged to permit the necessary range of movement and at the same time preventing the removal of the crank from the bar.

29. The combination with a vehicle body IIC mounted to permit atransverse swinging movementduring the operation of opening and-closing the doors.

30. Thecombination. with a vehicle-body having a dumping door, of a flexible device suitably anchored at one extremity andcondumping door having releasable hinge memnected with the winding device at=its opposite extremity, the said device extending underneath the door, sheave supports attachedl to the under surface of the door, and sheaves jointed within their sup orts to permit a swinging movement in a 'rection transverse to the axis of the door hinge.

31. In a dump car having two doors, each ada ted to open at two opposite ed es, the com bination of separable hinge mem ers-for connecting both edges of each door with the 1 car; and a pairof gears for operating 'the movable hinge members of both edges of both doors, each gear being connected to ac- -tuate the movable hinge members at one edge of both doors.

leasing movementwhile the opposite hinge members are in the released position.

33. In a dump car, the combination of a bers at its opposite opening edges, means for operating the releasable hinge members of each door' edge, and means for automatically locking one set of hinge members against the releasing movement, when the opposite set of members is in the released position.

In testimony whereof I afiix my signature in presence of two witnesses.

DAVID I-I. FOREMAN.

Witnesses:

ARTHUR T. HUR, EDWARD A. Brsnor. 

